Patent GB-376784-A (GB)
Title: Improvements in accounting typewriters
IPC: B41J3/28
Filed: 1931-04-14
Abstract: 376,784. Typewriters ; calculating- apparatus. HAUSHEER, M. E., 68 bis, Rue Bondy, Villemomble, Seine, France. April 14, 1931, No. 11087. Convention date, April 14, 1930. [Class 100 (iv).] Relay type-wheel actions; letter-spacing mechanism.-A typewriter-adding machine for printing line-by-line on a flat surface comprises a set of type-wheels having teeth arranged to co-operate with means for locking the type-discs in differentially-set position, means for locking selected type-discs to permit of repeat printing, and totalizer-actuating means. The differentialsetting means may comprise a member for successively coupling the type-wheels to a onerevolution shaft, the arc of coupling being determined by key-set stops, and the coupling- member being moved step-by-step to co-operate successively with the type-wheels. In the machine shown in Figs. 1, 2, and 3, type-wheels 20 and setting-mechanism therefor are mounted as a unit in a casing 4 which is supported on rails 2 on the main framework 1 and is arranged over a platen 6 associated with line-spacing mechanism described below. The casing remains stationary at the front of the machine during composition, but can be moved to the rear by hand, pedal, or power, to permit replacement of the sheets carried by the platen. Alternatively, the casing can remain at the rear of the machine during composition. The type-wheels are revoluble on a hollow shaft 24 which is revolubly mounted by means of hubs 57 on a fixed spindle 27, there being one type-wheel for each character in a line, and each type-wheel bearing a complete set of alphabetical and numeral types 21, and a corresponding set of index characters 22. Each type-wheel is formed with a notch 36, Fig. 7, for co-operation with a spring-urged coupling- pin 33 mounted in a cursor 29 running on the spindle. A cord 31, secured to a slide 30 engaging the cursor, passes over guide-pulleys 105 . . 109 and.is wound on a spring drum 104 and a drum 111. The cord is connected to a carriage 95 which runs on rails 98, 99 and travels with an escapement consisting of dogs 100, 101 splined on a shaft 102 and co-operating with a rack 103. The shaft 102 is rocked by means of an arm 113 and a co-operating cam 112 connected to the shaft 24. The dogs are so arranged that at each operation of the keys 42, the carriage and cursor are moved two halfsteps to the left by the spring drum, the step being equal to the distance between two typewheels. The carriage and cursor are in the same vertical plane and travel in the same direction. The coupling-pin has an aligning- tooth 94 for engaging a rack 93 in the shaft 24. A cam 53, Fig. 7, travelling with the cursor and co-operating with the coupling-pin 33, is splined on a shaft 55 which is journalled in the hubs 57 of the shaft 24 and is provided at each end with an arm 56, Fig. 9, engaging a plunger 60 mounted in the hub and co-operating with a cam 63 pivoted on the hub and connected to a flap 62. Each flap co-operates with a set of stop-pins 50 mounted in a stationary ring 51 and abutting on cams 48 which are connected to links 46 operated by the keys 42. Locking- dogs 126, Fig. 2, for engaging notches 23 in the type-wheels are normally restrained by latches 129 releasable by means of an arm 140 which is splined on a shaft 139 and travels with the carriage. The shaft 139 is provided at each end with an arm 138 connected to a link 136 having a roller 137 co-operating with a cam 134, Fig. 9, on a loose ring 133 having teeth 135 for engaging a tooth 132 on the associated plunger 60. The shaft 24 carries a loose sprocket wheel 82, Figs. 1 and 2, which is connected by a chain 88 to a motor 90 and is associated with a onerevolution clutch controlled by the keys. The clutch consists of a collar 76 secured to one of the hubs 57 and provided with a spring-urged dog 80 having a notch normally engaging the bevelled end of a lever 73 connected to a universal slide 68 operated by the keys 42. On depression of any key, the dog is permitted to engage one of a series of holes in the sprocket wheel, and after one revolution, the dog is released by means of the lever 73. Initially the cursor 29 registers with the first type-wheel at the left of the set, and the coupling-pin 33 engages the notch 36 therein. On depression of any key the associated stop-pin 50 is projected, the shaft 24 commences to rotate, and the type-wheel rotates until the selected type reaches the printing line. Thereupon the cam 63 depresses the plunger 60, the cam 53 withdraws the coupling-pin, and the type-wheel is released from the shaft 24. At the same time, the tooth 132 engages one of the teeth 135, the cam 134 causes the arm 140 to release the first latch 129, and the first dog 126 is permitted to lock the type-wheel in set position. During further rotation of the shaft 24, the escapement 100, 101 permits step movement of the carriage and cursor, and the coupling-pin moves into engagement with the second type-wheel. At each operation, the coupling-pin is withdrawn independently of actuation of the stop mechanism, by means of an arm connected to the shaft 102 and abutting on a shoulder 120, Fig. 1, on one of the plungers 60. The above-described operations are repeated on the second and subsequent type-wheels until a line or part of a line has been composed. The index characters 22 corresponding to a composed line are visible through a window 91 in the casing 4. On depression of an impression key 258, Fig. 2, impression hammers, described below, are operated, and the type-wheels and associated mechanism are returned to normal position. The impression key is connected to a slide 260 controlling a one-revolution clutch 261 for coupling a shaft 262 to the motor. The shaft 262 drives a shaft 307, Fig. 3, connected by a universal joint 308 to a gear 304 engaging a gear 303 which is normally disengaged from the drum 111. A cam 293 on the shaft 262 rocks an arm 294 connected by a link 296 to an arm 297 on the shaft 102, and an arm 298 on a shaft 299 having a cam 300 engaging a swinging plate 301 which abuts on the shaft 302 of the drum 111. Another cam on the shaft 262 operates linkage 144 connected to a shaft 146 having a cam 147 engaging the dogs 126. After impression has been effected by depression of the impression key, the dogs 126 are released, to permit return of the type-wheels by means of spring-urged pinions 39, Fig. 7, the escapement 100, 101 is disengaged, the drum 111 is driven, and the carriage and cursor are returned to normal position whereupon a latch for holding the arm 298 in displaced position is released by the carriage. The type-wheels are arrested and cushioned by means of shoulders 150 and co-operating pivoted stops 149 resting on springs 152. The ring 133 is returned by means of a spring drum 133<1>. A space-bar 115 for moving the carriage and cursor step by step without causing rotation of the type-wheels, is connected to linkage 119 for rocking the shaft 102 and thereby operating the escapement. The carriage and cursor can be moved continuously by means of a hand-lever 123, adapted to release the escapement by co-operation with an arm 125 splined on the shaft 102. A correction key 141 for returning all the type-discs to normal position before impression is effected is connected by the linkage 144 to the shaft 146 bearing the dog-releasing cam 147. A key 153 is associated with the means shown in Fig. 15 for returning a mis-set disc to normal position and simultaneously returning the carriage and cursor one step. The key 153 is connected by, linkage 158 to a rock shaft 159 having a cam 163 engaging a lever 164 which is connected to a cam 169 co-operating with a rocking arm 170 provided with a dog 172 for engaging a ratchetwheel 162 on the drum 111. The dog is normally disengaged by means of a pin 174 thereon and a co-operating incline 175. Cams 176, 180 on the shaft 159 serve to rock the shaft 102, and a shaft carrying a splined arm 185, Fig. 2, which travels with the carriage 95 and co-operates with the dogs 126. On depression of the key 153, the dog 126 of the mis-set typewheel is released by the arm 185, the type-wheel returns to normal position, and the dog 172 turns the ratchet-wheel and thereby retracts the carriage and cursor to permit of the coupling- pin re-engaging that type-wheel. If any parts of the matter are to be repeated from line to line, the corresponding type-wheels are locked in set position by means of dogs 186, Figs. 2 and 3, controlled by a repeat-key 192. The dogs are normally restrained by latches 189 co-operating with an arm 203, travelling with the carriage and splined on a shaft 200 which is connected by links 197, 196 to a link 194 operated by the repeat-key, the link 197 having a hook 198 for engaging an arm 202 on the shaft 139. When one of the keys 42 is depressed to set a typewheel, simultaneous depression of the repeatkey couples the shafts 200, 139, the arm 203 releases one of the latches 189, and the associated dog 186 locks the type-wheel. On release of the dogs 126 and return of the carriage and cursor, the type-wheels that are locked by the dogs 186 remain in set position and re-setting thereof during' composition of subsequent lines is unnecessary. The dogs 186 are released by means of keys 204 connected to cams 210 for rocking levers 211 abutting on the dogs. The levers may have exchangeable plates 212 for simultaneously releasing a number of dogs. Totalizers 236, Figs. 2 and 3, differentially actuated by the type-wheels 20, are mounted on a slide-way 257, on the casing 4 and can be positioned to co-operate with any of the typewheels. The totalizers are actuated by means of intermediate gearing mounted on a frame 246 which travels with the carriage 95. The intermediate gearing comprises a pinion 241 for engaging a totalizer pinion 240, and pinions 243, 242 for engaging any one of a series of pinions 239 gearing with the type-wheels. The frame